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On a secondary invariant of the hyperelliptic mapping class group
Takayuki Morifuji1
Banach Center Publ. 85 (2009), 83-92
doi:10.4064/bc85-0-5

Abstract: 
We discuss relations among several invariants 
of $3$-manifolds including Meyer's function, 
the $\eta$-invariant, the von Neumann $\rho$-invariant 
and the Casson invariant 
from the viewpoint of the mapping class group of a surface.



MSC (2000): Primary 57R20; Secondary 57M27.
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  1. Department of Mathematics
    Tokyo University of Agriculture and Technology
    2-24-16 Naka-cho, Koganei
    Tokyo 184-8588, Japan